Turret attachment for lathes



Dec. 18 1928.

Fla;

A. J. LIBERT TURRET ATTACHMENT FOR LATHES Original Filed Nov. 24, 1925 5 Sheets-Sheet 1 1957/1018 J L/BEETINVEN R.

A TTORNEYS.

Dec. 18, "1928.

A. J. LIBERT TURRET ATTACHMENT FOR LATHES M. Illl C V\ m a R m 9k m m wt \w Original Filed Nov. 24, 1925 [JBERTINV TOR.

ATTORNEYS.

Dec. 18, 1928. 1,695,926

,A. J. LIBERT TURRET ATTACHMENT FOR LATHES Original Filed v. 24, 1925 Sheets-Sheet '5 A TTQRNEYS.

Patented Dec. 1 8, 1928.

UNITED STATES ARTHUR J. LIBERT, OF GREEN BAY, WISCONSIN TURRET ATTACHMENT FOR LATHES.

Application filed November 24, 1925, Serial No. 71,076. Renewed August 24, 1928.

The invention relates to a turret for lathe machines, and more particularly to improvements in that class of adjustable turrets forming the subject-matter of Letters Patent issued to me under date of December 9, 192 1, No. 1,518,156.

The primary object of the invention is the provision of a turret of this character, wherein the same is in the form of an attachment for a lathe and is so mounted that the entire structure can be swung horizontally away from said lathe to an inoperative position, to be out of the way.

Another object of the invention is the provision of a turret of this character, wherein the same when in Working position on the lathe will be held against swinging moves ment to assure accuracy in the operation of said turret. j

A further object ofthe invention is the provision of a turret of this character, where in means is employed to provide more rigidity by transferring part of the strain of boring to the carriage proper of the lathe.

A still further object of the invention is the provision of a turret of this character, wherein the construction thereof is a general improvement over the subject-matter of the patent issued to meon or about December 9, 19241, and bearing Patent No. 1,518,156.

lVith these and other objects in View the invention consists in the features of construe tion, combination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereunto appended, although it is to be understood that changes, variations and modifications may be made as come properly within the scope of said claims,'without'departing from the spirit of the invention or sacrificing any of its ad vantages.

In the accompanying drawings:

Figure 1, is a fragmentary plan view of the lathe bed, showing by full lines the turret in its working position on the carriage of said lathe, and by dotted lines the turret in shifted or inoperative position.

Figure 2, is a. side elevation, showing the turret in working position on the lathe.

Figure 3, is a front elevation of the turret.

Figure 4, is a fragmentary vertical sectional view through the, rotatable tool holder and its base.

' ings.

Figure 5, is a fragmentary sectional view on the line 55 of Figure 3 looking in the direction of the arrows.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the drawings in detail A, designates generally a portion :of the bed of a lathe, which latter may be of any ordinary construction, and B, its carriage which is designed to travel longitudinally of the bed in the usual manner, and this carriage is fitted with the ordinary tool post C.

The improvements constituting the present invention over the subject-matter of Letters Patent issued to me on or about December 9, 192 1, No. 1,518,156, comprises a bracket like turn-table base 10, arranged at one side of the carriage B, and bolted or otherwise secured thereto. Centrally mounted in this base 10, is a king bolt forming a pivot 11, for swingingly connecting to said base the turn-table 12, integrally formed on the turret D, hereinafter described.

The turret D, comprises a base plate 13, which is adapted to swing horizontally through the medium of the vertical pivot 11-, engaged through the turn-table 12, as will be apparent in Figures 1 .and 2, of the draw- Forined on and projecting from the upper face of the base plate 18, transversely relative to the bed A, of the lathe, is a guide rib 1a, of dovetail shape to which is slidably fitted a saddle 15, having a laterally disposed support 16, which overlaps a portion of the base plate 13. This support 16, forms a platform to the under side of which is connected the adjusting screw 17 journaled in the arched portion 18, of the base plate 13, and terminating exteriorly thereof in a handle or lever 19, for manually actuating the screw 17, for moving the saddle 15, in the adjustment thereof on the base plate 13, as will be obvious.

Eccentrically connected to the platform 16, by a countersunk screw 20, isa swinging table 21, having fitted centrally therein a pivot stud 22, to which is rotatably fitted a turntable tool holder 23, the stud 22, being provided with a centrally located manually operated securing member 2 1, which is tapped in said stud and is adapted at its lower end to be detachably threaded in either of the selective holes 25, and 2 6, respectively, so as to secure the holder 23, in two positions. When the member 24, is engaged in the hole 25, as shown in Figure 4, of the drawings, the table 21, will be in a position to have the tool holder 28, in confronting relation to the saddle 15, of the turret, whereby a selected tool in the holder can be lowered onto the saddle for the clamping of the tool in Working position, in a anner as hereinafter described. New, on shifting the table 21, so that the member 24, will engage the other hole 26, in the platform 16, the table will have been adjusted to a position to locate the tool holder 23, at the rear portion of the turret, and in this manner out of the way, to clear the saddle 15, for other uses in the operation of the lathe. The upper head end of this member 24, is knurled as at 27, so that it can be manually turned into and out .of the holes 25, and 26.

Formed in the upper face of the saddle 15, near the front end thereof is a tool seat 28, for receiving from the tool holder 23, each tool retainer 29, which latter is held firm in the scat through the medium of a clamping plate 30, swingingly fastened at 31, to

the saddle and locked by the handle nut 32,

engaged on a bolt 31,having its head 33, slidably fitted in an inverted substantially T- shaped slot 34, formed in said saddle 15, so that said plate 30, can be shifted toward and away from the tool seat 28, for the proper adjustment of said clamping plate, to firmly hold said tool retainer in the seat therefor.

The retainers 29, for the tools removably fitted upon tilting blocks 35, each being pivoted in bearings 36, formed on and rising from the turn table 23, one of each pair of bearings being provided with a locking device 37, for locking each block 85, upright to normally hold the retainers 29 in a vertical position on the rotatable tool holder 23, so that the tools will be in said position, and its tool fitted therein in vertical position when not in use.

Mounted in a boss 38, on the base plate 13, is an adjustable stop 89, for limiting the movement of the saddle 15, in one direction.

The base plate 13, is fastened firmly in working position on the carriage B, through the medium of a clamping plate 40, which is held by the nut and bolt 41, the bolt being removably fitted in the slot 42, in the carriage B, in the manner as shown in Figure 1, of the drawings.

Mounted in the turn-table 12, near the periphery thereof is a locking pin 48, which is adapted to engage in either of a pair of spaced holes 44, and 45, to secure the turret in operative position upon the carriage B, or in inoperative position to one side of the latter.

Carried on the base plate 13, at the forward outer corner thereof is a bearing block 46,

which is adapted to rest upon a bolt head 47, on the carriage B, and in this manner more to be secured to the carriage of a lathe, and

having a horizontal base, a turret having a turn table portion pivotally connected with the base for the horizontal swinging of said turret on and from the carriage, a saddle adjustable on the turret and having a platform, a swinging table eccentrically pivoted to the platform, a tool holder rotatable on the table, means for latching the latter in two position on the platform, and means for clamping a selected tool from the tool holder on the saddle when the table is in one position on the platform. r

2. The combination of a bracket adapted to be secured to the carriage of a lathe, and having a horizontal base, a turret having a turn table portion pivotally connected with the base for the horizontal swinging of said turret on and from the carriage, a saddle adjustable on the turret and having a platform,

a swinging table eccentrically pivoted to the 1 platform, a tool holder rotatable on the table, means for latching the latter in two positions on the platform, means for clamping a se lected toolupon the saddle when said tool is lowered from the holder and the table is in one position on the platform, and means for locking the turn table of the turret when swung off of or onto the carriage.

3. The combination of a bracket adapted to be secured to the carriage of a lathe, and having a horizontal base, a turret having a turn table portion pivotally connected with the base for the horizontal swinging of said tu ret on and from the carriage, a saddle adjustably engaged on the turret and having a platform, swinging table eccentrically pivoted to the platform, a tool holder rotatable on the table, means for latching the latter in different positions on the platform, means for clamping a selected tool upon the saddle when said tool is lowered from the holder and the table is in one position on the platform, means for locking the turn table of the turret when swung off of or onto the carriage, and means for limiting the adjustment of the saddle.

4. The combination of a bracket adapted to be secured to the carriage of a lathe, and having a horizontal base, a turret having a turn table portion pivotally connected with the base for the horizontal swinging of said turret on and from the carriage, a saddle adjustably engaged on the turret and having a platform, a swinging table eccentrically pivoted to the platform, a tool holder rotatable on the table, means for latching the latter in different positions on the platform, means for clamping a selected tool upon the saddle When said tool has been lowered from the holder and the table is in one position on the platform, means for locking the turn table" of the turret when swung be of or onto the engageable with the carriage to transfer strain from the turret to said carriage.

In testimony whereof I aflix my signature;

ARTHUR LIBERT. 

